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Table 1 Patient demographics and treatment characteristics: ERP vs. control

From: Enhanced recovery protocols for colorectal surgery and postoperative renal function: a retrospective review

  Control (N = 464) ERP (N = 590) p value
Age (years, median [IQR]) 60 [51–71] 60 [48–68] 0.175
Sex    0.316
 Male 48.9% (227) 52.0% (307)  
 Female 51.1% (237) 48.0% (283)  
Race    0.749
 White 72.6% (337) 74.7% (441)  
 Black 23.5% (109) 21.7% (128)  
 Others 3.9% (18) 3.6% (21)  
ASA classification    < 0.001
 1 1.7% (8) 3.9% (23)  
 2 58.4% (271) 34.4% (203)  
 ≥ 3 39.9% (185) 61.7% (364)  
Indication    0.045
 Benign 25.8% (120) 19.3% (114)  
 IBD 11.3% (52) 12.9% (76)  
 Neoplastic 62.9% (292) 67.8% (400)  
Extent of surgery    < 0.001
 Colectomy 88.1% (409) 52.4% (309)  
 Proctectomy 11.9% (55) 47.6% (281)  
Surgical approach    < 0.001
 Laparoscopic 48.7% (226) 59.9% (353)  
 Open 51.3% (238) 40.1% (237)  
 Intra-op total fluid (mL, median [IQR]) 3760 [2460–5351] 3468 [2688–4536] 0.233
 Intra-op colloid (mL, median [IQR]) 500 [0–1000] 1000 [750–1500] < 0.001
 Pre-op hemoglobin (mg/dL, median [IQR]) 13.4 [11.8–14.5] 13.3 [11.8–14.5] 0.401
  1. ERP enhanced recovery protocol, ASA American Society of Anesthesiologists, IQR interquartile range, IBD inflammatory bowel disease